There is a document called the "Buyer's Advisory" available on the Arizona Department of Real Estates website. There are other links through the advisory that you also may want to utilize to find out about pertinent information in a specific area.
Realtor, CSSN, GRI
John Hall & Associates
City of Scottsdale publishes police activity to a website: http://www.raidsonline.com - You can put in an address you're considering purchasing, or your own current home and it will provide police activity in that area. Other municipalities in the Valley also use it. Another resource to consider is http://www.spotcrime.com - If you are purchasing in AZ, ask your Realtor for a copy of the Arizona Buyers Advisory which is a great resource guide for homebuyers provided by our Arizona Association of Realtors.
I really like Ryan's link. Thanks Ryan. As a mom myself this was important to me and continues to be so. I can also suggest calling the local police department to talk to them. It made me feel better to get an idea of how they felt about the area I moved in to. Then of course, don't hesitate to stop a neighbor or knock on a door to just say hi and get an idea of how they have experienced their neighborhood too. !